To deliver notifications to the new email addresses, the business practitioner should use a custom target mapping1.
A custom target mapping is used to map the fields in the delivery object to the fields in the target database1.
https://sendpulse.com/support/glossary/email-notification
To deliver notifications to secondary email addresses for recipients, a business practitioner needs to adjust the targeting configuration to include these additional contact points. By using a custom target mapping, the practitioner can define a schema that includes the secondary email addresses and instructs the campaign to use this data when sending communications. Custom target mappings allow the practitioner to define additional fields beyond the default schema, enabling the delivery of messages to alternative email addresses associated with the recipients.References:The answer is based on the functionality of target mappings in Adobe Campaign Classic, which allow for the customization of recipient targeting for campaign deliveries.

Explanation
According to the Adobe Campaign Classic Business Practitioner Exam Guide1, one of the tasks that you should be able to perform as an Adobe Campaign Business Practitioner is to determine the correct campaign template.
Based on my web searches, I found that seed addresses are not managed via standard profiles and targets, but in a dedicated node of the Adobe Campaign hierarchy2. Therefore, they are not part of the campaign template settings.
Similarly, approvals are not part of the campaign template settings either. They are managed by creating a workflow activity that requires approval before sending a message3.
However, control groups are part of the campaign template settings. They can be configured in the Control population option in Advanced campaign settings.

You can use a custom data schema linked to Recipient when you want to store data in a separate table and link it to the recipient table1.
When collecting data from a web form that includes both identifiable information (such as first and last name) and preferences (such as color preferences), the best practice is to store this information in a custom data schema that is linked to the recipient. This linkage allows the stored data to be associated with a specific recipient, which can be anonymized initially and then identified later if necessary. By using a custom data schema, you can extend the recipient schema to include additional fields without modifying the out-of-the-box recipient schema, ensuring that the database remains organized and scalable for future needs.References:This answer is based on best practices for data management in Adobe Campaign Classic and similar marketing automation platforms, which often involve creating custom schemas for additional data collection while maintaining a link to the central recipient or customer schema for proper data association.

The direct mail delivery step in Adobe Campaign allows for the generation and sending of personalized direct mail files directly to a configured print vendor. Unlike a data extraction step, which typically only extracts data into a file for manual handling, the direct mail delivery step includes functionalities that handle the operational aspect of sending the generated file to the vendor for physical mail distribution. This streamlines the process and ensures that the physical mailing aligns with digital campaign efforts.References:The capabilities of the direct mail delivery step are based on Adobe Campaign's features for managing omnichannel marketing campaigns, including direct mail.

During the analysis phase of a delivery, the system is conducting checks on the target population, content validity, and other parameters without actually sending any messages. At this stage, if errors are detected, the delivery process has not begun, and no messages have been dispatched. Therefore, there is no risk associated with stopping the delivery to address any identified errors. It's actually a prudent measure to prevent the dissemination of erroneous messages.References:The analysis phase and its role in preventing the sending of erroneous messages are common features in email campaign management systems like Adobe Campaign Classic.